Lock.



c. v. DOYLE.

LOCK.

APPLICATION FILED OCT. I1, 1918.

Patented Feb. 25, 1919.

iii)

vided with my improvements; Figs. 2

iii

@LENCE V. DOYLE, OF NEW YORK, 1%. Y.

LQCK.

Specification of Letters Patent.

Patented Feh.25, 1919.

original application filed February 25, 1918, Serial No. 219,151. Divided and this application filed October 11, 191%. Serial No. 257,685.

To all whom it may concern: 7

Be it known that 1, CLARENCE V. DOYLE, a citizen of the United. States, and resident of New York city, borough of Manhattan, in the county of New York and State of New York, have invented certain new and useful Improvements in Locks, of which the following is a specification.

This application is a division of my application for Letters Patent tor improvement in locks, filed February 25, 1918, Serial No. 219,151.

Recording locks are used upon doors to indicate the period of time during which such lock is locked. It sometimes occurs, however, that an employee will give the key of the recording lock to an unauthorized person, with instructions to operate the recording look at a specified time, whereby the employee may overstay his allotted time for ahsence without the excess time being recorded in the recording lock.

The object of my invention is to deter an employee from giving the key to an unauthorized person.

in carrying out my invention I apply a recording lock and a primary or ordinary look upon the same door, and provide keepore for said locks, the keeper of the recording lock being provided with means, such as a pin or stop, in position to engage the bolt oi the recording look when the latter is unlocked, thereby to retain thedoor in such a position that the cannot be locked until the bolt of the recording lock is locked, and whereby the bolt of the recording lock cannot be unlocked while the bolt oi the primary lock is locked.

My invention comprises novel details of improvement and combinations of parts that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to he had to the accompanying drawings forming part hereof, wherein,

Figure 1 is a front view, partly in section, of a portion oi a door and its iamb pro an 3 are enlarged cross sections respectively on the lines 2, 2, and 3, 3, in Fig. 1, showing the bolts of the locks in the positions they assume when the door is nearly closed and said locks are unlocked, and Figs. 4 and 5 are sectional views similar to Figs. 3 and 4 showing the positions of the bolts of said looks when the door is locked.

bolt oi the primary lock locked position.

-Similar numerals of reference indicate corresponding parts in the several views.

The numeral 1' indicatesv a door of any suitable construction, and 2 is the door jamb adqacent the free edge of the door. At 3 is lndicateda recording lock having a looking mechamsm 4 of anV suitable construction provided with a bolt 5 adapted to coprises a stop or pin 8 within. keeper 6 adapted to coiiperate with bolt 5. It is customary that the bolt 5 of the recording lock projects somewhat from its casing when unlocked (Figs. 1 and 2), so that a very slight operation of the key of said lock will cause the end of the bolt to engage the keeper to prevent an employee from partially operating the bolts suiticient-ly far to cause the recording mechanism to operate and yet without the bolt engaging the keeper. 1 have shown bolt 5 of the recording lock partly projecting from the casing of the lock 4, or in other words, said lock is so set on the door that when the latter is closed said bolt will be sufliciently near the keeper to enable the portion 7 of bolt 5 at the outer wall of recess 7 (Fig. 2) to bear against stop or pin 8, to keep the door partly open while the bolt'of the recording lock is in its un- With the parts in such position, when bolt 5 is advanced from the look toward the keepenthe recess 7 of the bolt will pass over stop or pin 8 to enable the door to be fully closed when bolt 5 is locked (Fig. 4). The door must be opened slightly to enable the bolt 5 to be withdrawn from stop or pin 8, the width of keeper 6 being such as to permit lateral movement of bolt 5 therein to permit operation of the bolt with respect to said sto or pin. At 9 is a primary or ordinary loo of any suitable construction secured upon door 1, and at 10 is a keeper for the bolt 11 of lock 9, the keeper being secured upon the jamb in any suitable manner. The osition of keeper 10 with respect to be t 11 is such that when the door is fully closed Mid the bolt 11 may enter said keeper (Figs.

, which closing of the door is only permitted when bolt 5 is advanced as in Fig. 4. It will thus be lf-nderstood that the means for retaining the door in an open position (viz: the engagement of part 7 with stop or pin 8) simultaneously prevents the advance of the bolt 11 of the primary lock, and said means are disengaged by advancingthe bolt of the recording lock and are engaged by withdrawing the bolt of said 100 When the door is to be locked bolt 5 of the recording lock first must be advanced into its keeper 6 to permit stop or pin 8 to enter recess 7 of said bolt to enable the door to be sufiiciently closed to permit .bolt 11 of the primary lock to enter the keeper 10, hence while the primary lock is locked the door cannot be opened sufficiently to permit bolt 5 to be withdrawn owing to the presence then of stop pin 8 in recess 7 of said bolt; consequently bolt 11 of the primary lock first must be unlocked before the door can be opened sufliciently to permit bolt 5 to be unlocked.

With the arrangements described, it an employee should give the key of the recording lock to an unauthorized or irresponsible person, with instructions to operate bolt 5 of the recordinglock at a specified time, said lock cannot be operated by such person while the bolt 11 of the primary look is locked, it being assumed, of course, that such employee would not give the keys of both recording and primary locks to such unauthorized person at the same time, for ifhe did so both locks would have to be unlocked, thus leaving the door unguarded by said lock and it would be assumed that an employee would not take such risks.

My invention provides simple and efficient means to guard against an employee leaving the key of the recording lock with an unauthorized person to enable the employee to overstay his allotted time of absence without detection from the operation of the recording lock.

Having now described my invention what I claim 1s.

1. The combination with a primary lock and a recordin lock both adapted to simultaneously retain a door locked, of means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked.

2. The combination with a primary lock and a recording lock both adapted to simultaneously retain a door locked, of means meager which render the primary lock inoperative to lock the door when the primary'and recording locks are unlocked said means being engaged and disengaged by a movement of the door.

3. The combination with a primary lock and a recording lock both adapted to simultaneously retain a door locked, of means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked, said means being engaged when the recording lock is unlocked and disengaged when the recording lock is locked.

4;. The combination with a primary lock and a recording lock both adapted to simultaneously retain a door locked, of means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked, said means being engaged by a movement of the door when the recording lock is unlocked and disengaged by a movement of the door whenthe recording lock is locked.

5. The combination with a primary lock and a recording lock both adapted to simultaneously retain a door locked, of means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked and also render the recording lock inoperative when the primary and recording locks simultaneously retain the door locked.

6. The combination with a primary lock and a recording lock both adapted to simul-.

taneously retain a door locked, of means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked and also render the recording lock inoperative when the primary and recording locks are locked, said means being engaged and disengaged by a movement of the door.

7. The combination with a primary lock and a recording lock both adapted to simultaneously retain a door locked, of means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked and also render the recording lock inoperative when the primaryand recording locks simultaneousl retain the door locked, the operation 0 the primary lock being permitting by locking the recording lock in cases where both locks have first been unlocked and the operation of the recording lock being permitted by unlocking the primary lock in cases where both locks have first been locked.

8. The combination with a primary lock and a recording lock both adapted to simultaneously retain a door locked, of means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked and also render the recording lock inoperative when the primary and recording locks-are locked, the operation of the primary lock being permitted by a movement of the door when the recording lock is locked in cases where the primary andrecording locks have first been unlocked, and the operation of the recording lock being permitted by a movement of the door when the primary lock is unlocked in cases where the primary and recording locks have first been locked.

9. The combination of a primary lock and a recording lock both adapted to simultaneously retain a door locked, the recording lock having engaging means which render the primary lock inoperative to lock the door when the primary and recording looks are unlocked.

10. The combination of a. primary lock and a recording lock 'both adapted to simultaneously retain a door locked, the recording lock having engaging means which render the primary 'lock' inoperative to lock the door when the primary and recording locks are unlocked and also render the recording lock inoperative when the primary and recording locks simultaneously retain the door I looked.

11. The combination of a primary 'lock and a recording lock both adapted to simultaneously retain a door locked, the record-- ing lock having engaging means which render the primary lock inoperative to lock the door when the primary and recording locks are unlocked and also render the recording lock inoperative when the primary and recording locks simultaneously retain the door locked, the operation of the primary lock being permitted by locking the recording lock in cases where the primary and recording locks have first been unlocked and the operation of the recording lock being permitted by unlocking the primary lock in cases where the primary and recording locks have first been locked.

12. The combination of a primary lock and a recording lock both adapted to simultaneously retain'a door locked. the recording lock bolt having a recess, and the keeper for said bolt being provided with a projection to enter said recess to prevent withdrawal of said bolt when the primary and recordin locks simultaneously retain the door 100 ed, said projection being arranged to engage a portion of the recording lock bolt when the recordin lock is unlocked to prevent fnll closing 0 the door to prevent locking the primary lock when both locks are unlocked.

Signed at New ,York city, in the county of New York, and State of New York, this 25th day of September, A. D. 1918.

CLARENCE V. DOYLE. 

